A tag attribute whose value is a String can name an attribute of one of the implicit objects available to tag handlers.
implicit object. This is a good way to pass scripting variable names to a tag handler where they are associated with objects
stored in the page context
Creating a class file for Tag Libraries
Now Create a jsp files and then a War File.
Next Create a Enterprise Application Project and add web module project and modify the Application.xml file (change the context root ), now create the Ear File